Ed Lansdale and Joe Redick set off in a car with several other teammates to find this mysterious warlord on September 15, 1954, wearing casual clothes as though out for a picnic, with guns carefully tucked away. They cruised down the highway past âlonely watchtowers and little roadside forts sitting in the rice paddiesâ and then rattled along a ârutted dirt roadâ until they were surprised by a group of guerrillas who emerged silently from the jungle. In the lead, Lansdale noted, was a youth âno more than five feet tall and maybe weigh ing ninety pounds dripping wet â¦ Wearing a faded khaki shirt and trousers, tennis shoes on his feet, weaponless, hatless, he looked as if he might be a guide sent to take me to his leader.â Lansdale was astonished to learn that âthis wiry youngster was the villainous guerrilla hated by the French!â

Lansdale was willing to spend money not only to win over the sect leaders but even to kill them if necessary. In a section of the Saigon Military Mission report not declassified until 2014, he admitted furnishing 2 million piastres ($57,000) in a âlarge suitcaseâ to Diem to pay a former Vietminh activist who had vowed âto get rid ofâ Ba Cut âthrough Vietminh who are close to this Hoa Hao rebel.â The scheme never came to anything, and Diem, âsomewhat embarrassed,â returned the money, but Lansdaleâs willingness to back the operation exposed a ruthless streak that would surface once again a few years later when he was asked by the Kennedy administration to âget rid ofâ Fidel Castro. Lansdale was enough of a realist to provide the necessary cash to achieve his objectives, even if it required a murder for hire, but he was so eager to protect his image as an idealist that he was deeply reluctant to admit what he was up to, not least to himself. He was not as naÃ¯ve and unworldly as he pretended to be, even if he had a powerful ability, which might be traced back to his upbringing in Christian Science, to repress unseemly aspects of reality that he preferred not to acknowledge.

Whatever the exact amount, the CIA payoffs to the sects were insufficient to avert an uprising against Ngo Dinh Diem. The prime minister had alienated the Binh Xuye n, whom he considered to be âgangsters of the worst sort,â by revoking their license in January 1955 to operate the Grand Monde casino, a major source of revenue. He also threatened to end Binh Xuyen control of the Saigon-Cholon police. The Binh Xuyen leader Bay Vien responded on March 3, 1955, by forming a United Front of Nationalist Forces with the Cao Dai and the Hoa Hao to oppose Diem. But while the sects were united in their opposition to Diem, they had no consensus candidate to replace him. If he had been overthrown, the most likely consequence would have been unstable rule by an ever-shifting junta lacking popular legitimacyâ"what, in fact, transpired when Diem was finally assassinated in 1963. Little wonder that a local newspaper referred to the political situation as un panier de crabes (literally a âbasket of crabs,â but really meaning âa nest of vipersâ), a description that Lansdale heartily endorsed. As he later wrote, Vietnam was in the grip of a âsudden madnessâ that nearly tore the country âapart at the seams.â

That Lansdale was able to win back these two Cao Dai warlords was a considerable coup for Diem, but the prime minister still faced a formidable array of foes. By Lansdaleâs estimate, the Binh Xuyen had as many as 10,000 troops, the Cao Dai 30,000, the Hoa Hao 50,000. (Other estimates were considerably lower.) The sectsâ military might became clear when Binh Xuyen troopers in green berets set up checkpoints and sandbagged positions across Saigon. They soon had control of all food supplies moving into the city and had placed mortars within range of the presidential palace. They even had gunboats on the Saigon River.

Diem had 151,000 troops of his own, but only 10,000 of them were deployed around the capital, and he could not be sure of their loyalty. Before fleeing to Paris at the end of November 1954, the mutinous General Nguyen Van Hinh had handed over command to General Nguyen Van Vy, another pro-French Bao Dai loyalist. Bao Dai, the chief of state who was widely seen as a French puppet, was collaborating with the sect leaders.

âDriving through the streets of Saigon in the predawn darkness, Lansdale saw that âeach tree trunk, shrub, alley and fenceâ sheltered troops whose âweapons and eyesâ followed his car as he drove past.â

Lansdale found Diem in his office on Monday, March 29, 1955, poring over large-scale maps of the metropolitan area, pointing out locations where Binh Xuyen mortars had been spotted. There were disquieting reports that the Binh Xuye n had acquired heavy 81-mm mortars that could rip apart the Norodom Palace as if it were a Lego set. Yet Lansdale saw no sign of panic in either Diem or the army troops fortifying the palace grounds. A few days earlier, Lansdale had worried about Diemâs passivityâ"his tendency to cry on Lansdaleâs shoulder rather than to take charge. But the crisis brought out the best in the prime minister. âI was struck by his calm,â Lansdale wrote. âThis was a man in control of himself.â

On the night of March 29-30, only a few hours after visiting Diem, Lansdale was awakened at his spacious new home at 65 Rue Duy Tan, eight blocks from the presidential palace, by the sounds of explosions and the âstutter of machine guns and the popping of rifles.â His poodle, Pierre, took refuge in a narrow space under the bed, leaving only âtwo big eyesâ visible. Joe Redick telephoned Diem to see whether he was all right. An aide reported that the premier was checking the troops on the front lawn while still in his pajamas and slippers. There had been shelling of the palace but no ground assault. The infantry combat, which Lansdale could hear in the distance, was going on in Cholon, where the Vietnamese National Army was driving back Binh Xuyen assaults. Lansdale called Ambassador Collins to share this information and, at Collinsâs request, set out for his residence to help manage this crisis.

Driving through the streets of Saigon in the predawn darkness, Lansdale saw that âeach tree trunk, shrub, alley and fenceâ sheltered troops whose âweapons and eyesâ followed his car as he drove past. At one intersection, he came upon a column of Vietnamese army troops blocked by French tanks. (The French still had 30,000 troops in and around Saigon.) The Vietnamese commander was loudly remonstrating with the French officers to let his men through, but to no avail. âI could only conclude,â Lansdale wrote, âthat the French military wanted the Binh Xuyen to win, inflicting defeat not only on the national army but on Diem and his government.â

Collins told Lansdale that, in order to stop the shedding of innocent blood, he had agreed to a French proposal for a cease-fire. Lansdale argued that a âcease-fire now merely put off the day of reckoning for which each side would prepare more thoroughly.â But once again the CIA operative and the four-star ambassador were talking past each other. Lansdale had little choice but to trudge home in the early morning hours as the cease-fire was taking effect. He found both government and gangster forces in combat positions on his block, watching each other warily in the evanescent early-morning darkness. As soon as Lansdale opened the door, Pierre bolted into the street. While Lansdale frantically tried to catch his dog, he heard âsubdued laughterâ from the soldiers on both sides crouched around the house.

Following this brief outbreak of fighting in late March 1955, an uneasy p eace descended on Saigon. Jeeploads of men raced through the streets of Cholon firing submachine guns. âBoth sides want to show me pictures,â Lansdale wrote, âof their lads whoâve been fished out of the river with their throats cut.â

The French hand in the unrest was obvious to Howard Simpson, an American information officer who drove past roadblocks manned by gangsters to visit the Binh Xuyen headquarters in Cholon; he was particularly struck by one âlong-haired officerâ in a red sport shirt and camouflage pants, his âgold-capped teethâ clamped around an âivory cigarette holder,â a cocked revolver in his hand and a holstered automatic on his hip. As Simpson sat talking with his Binh Xuyen interlocutors, he noticed French army motorcycle dispatch riders roaring in and out. A French captain in his shirtsleeves wandered out of the radio room before quickly scuttling away when he saw Simpson. âThe French are running the goddamn show,â Simpson muttered, a conclusion shared by Lansdale but denied by Lightning Joe Collins.

Rather than blame the French and the sects for fomenting instability, Collins had joined the French in concluding that Diem was the culprit. The ambassador had never much cared for the prime minister; he viewed Diem as a âsmall, shy, diffident man with almost no personal magnetism,â hobbled by an âinherent distaste for decisive action.â Lansdale thought Collins talked to Diem as if he were a âcountry squire looking down his aristocratic nose at a bumpkin, and a non-too-clean bumpkin at that.â Ironically, now that Diem was moving against the sects, Collins was not crediting him for taking âdecisive actionâ but rather blaming him for âoperating practically a one-man government.â On March 31, the day after the inconclusive skirmishes in Saigon, Collins cabled the State Department, âI seriously doubt this can last long.â He argued that âit is, therefore, essential to consider possible alt ernatives to present situation,â proceeding to list several political figures who could replace Diem.

John Foster Dulles told his brother, Allen, that âit looks like the rug is coming out from underâ Diem. On April 11, 1955, the secretary of state sent Collins a momentous cable, revised personally by President Eisenhower. âIn light of your reiterated conviction that Diem cannot gain adequate Vietnam support to establish an effective government and that other men are available whose designation as Premier would improve the existing status,â it said, âyou are authorized to acquiesce in the plans for Diemâs replacement.â Dulles then summoned Collins to Washington to work out âa program for replacing Diem.â Given the CIAâs recent record of toppling Mohammad Mossadeq in Iran in 1953 and Jacobo Arbenz in Guatemala in 1954, that was no idle threat: this was one administration that did not hesitate to remove foreign leaders if it felt that doing so was in America âs interest.

Before Collins departed, on April 20, 1955, Lansdale asked him what he should say if Diem wanted to know whether U.S. support for him was wavering. Lightning Joe disingenuously replied that Lansdale might âhear all sorts of rumors of other things, even stories that the U.S. wouldnât support Diem.â But Lansdale was to âdisregard such talesâ in the assurance âthat the U.S. would continue to support Diem.â And then Collins flew off to conclude the process of dumping Diem.

In Washington, Collins persuaded the president and secretary of state to go along with a scheme to kick Diem upstairs into a largely ceremonial office of president while delegating real authority to a new premier. At 6:10â"6:11 p.m. on Wednesday, April 27, 1955 (7:10â"7:11 a.m., April 28, in Saigon), Dulles sent out cables to the U.S. embassies in Saigon and Paris announcing the new policy, yet less than six hours later, he sent out another cable retracting his earlier decisi on and warning the embassies to âtake no action whatsoever ... until further instruction.â

What happened during those six critical hours to make Dulles change his mind? Edward Lansdale had learned what was in the offing and had acted to stop it. At 8:48 a.m., Wednesday, Saigon time (7:48 p.m., Tuesday, in Washington), Lansdale sent a telegram to CIA headquarters arguing âthat the Diem government represented a better chance for success than any non-Vietminh government it would be possible to form in South Vietnam. Failure to support Diem would cause great damage to American prestige and would doom any successor government to Diemâs to failure. The only winners would be the Viet Minh.â Lansdaleâs messages prompted the âstay orderâ from Dulles, along with a request for Lansdale to provide a full report that could be discussed at a National Security Council meeting on the morning of Wednesday, April 28, Washington time. With this insubordinate intervention, Lansdal e had won Diem a stay of executionâ"much to Collinsâs consternation.

While policymakers in Washington were going to bed on the evening of April 27, events in Saigon were moving at tsunami speed. In his memoir, Lansdale recounted getting a phone call from Diem at his Cholon office at noon on Wednesday, April 28, asking him to come to the Norodom Palace. He and Joe Redick set out immediately in Lansdaleâs new car, a big, black CitroÃ«n sedan that had been smuggled out of Haiphong by Lou Conein. As they were approaching Place Khai-Dinh, they saw bicyclists falling in the street while cars were stopping and their occupants were sprawling on the pavement. At first it looked like a âmassive slapstick scene,â but then they heard the sound of machine-gun fire, which had previously been muffled by surrounding buildings. A number of the bicyclists had just been killed. Lansdale and Redick stopped their own car and joined the others lying flat on the pavement. A few minutes late r the firing died away, and they resumed their journey. The war between the government and the Binh Xuyen, which had started and stopped a month before, had just resumed.

Lansdale and Redick found Diem on the porch of the palace. According to Lansdaleâs memoir, Diem had heard that âAmbassador Collins had obtained President Eisenhowerâs approval for a change of U.S. policy toward Vietnam.â Diem wanted to know whether it was true that he was being âdumped.â Lansdale supposedly responded that he didnât believe this report and asked Diem where he got his information. This account makes no sense, given that just a few hours earlier Lansdale had been sending cables to stop Diem from being dumped. He was dissembling when he claimed in his memoir, âNone of these high-level deliberations in Washington were known to me in Saigon at the time,â probably to protect his CIA sources, possibly even Allen Dulles himself. As for how Diem found out about the decisions being mad e in Washington, that information was either shared by Lansdale himself or by the prime ministerâs American friend Wesley Fishel, who was back in the United States.

Just as Lansdale and Redick were returning from the Norodom Palace at 1:30 p.m., they heard a âseries of loud explosions from the direction of the palace.â Binh Xuyen mortars had opened up on the prime ministerâs residence.

âUrban warfare has always been a grim, confused, ugly business. The Battle of Saigon in the spring of 1955 would be no different.â

Who fired the first shots? The French blamed Diem, and the most careful reconstruction of events, by the historian David L. Anderson, supports that conclusion. On April 26, 1955, Diem had resumed his efforts to replace the Binh Xuyen-appointed chief of police with his own man, knowing that the Binh Xuyen would resist by force. Not waiting for the gangsters to strike, Vietnamese army troops had gone by truck to Cholon on April 28 and gotten into a fir efight with the Binh Xuyen. The mortar attack on the presidential palace was a response. The French were convinced that this armed confrontation was all Lansdaleâs fault for encouraging Diem to âtake armed action.â In reality, having told Diem how close he was to losing U.S. support, Lansdale did not need to do much to spur him into action. Diem must have realized that he had nothing to lose by launching an attack against the Binh Xuyen. If the offensive succeeded, Diem would give the Eisenhower administration no choice but to support him. And if it failed, he would lose power and possibly his life. But he would lose power anyway if he did nothing and waited for Washington to oust him. The time for action was all the more propitious given that Collins was in transit from Washington and therefore unable to intervene, as he had done a month earlier.

Lansdale tapped into his wide network of friends to keep track of the fighting. Early on the afternoon of Wednesday, April 28 , for example, shortly after his return from the palace, Lansdale received a call from the Time-Life correspondent John Mecklin. He and a photographer were in a police station where a company of Vietnamese National Army troops was being besieged by a Binh Xuyen battalion. Mecklin was worried that they would all be killed. But then the army troops counterattacked and put the Binh Xuyen to flight. The gangsters were running away as fast as they could, shedding their uniforms as they ran. âWho said these army guys wouldnât fight!â Mecklin shouted before hanging up.

Lansdale set out for the embassy to share his information. He was astonished to discover that the diplomats âwere debating which adjectives to use to describe the low morale of the Vietnamese Army troops who now had to stand up to the high-spirited Binh Xuyen.â They were getting their reports from the French, and they did not believe Lansdaleâs more optimistic assessment. Lansdale seethed about desk-bound d iplomatsâ"âthe precious lads who sit in offices or make the cocktail circuit and know the surface of a country so brilliantly.â But he knew that if the president accepted the State Departmentâs gloomy estimate, Diem was done.

Urban warfare has always been a grim, confused, ugly business. From the fighting in Jerusalem in AD 70 between Jews and Romans to the Warsaw Uprising in 1944, close-quarters combat in cities has always led to extensive casualties and property damage. The Battle of Saigon in the spring of 1955 would be no different. As Lansdale drove around on Wednesday afternoon, he could see âdense clouds of smokeâ darkening the skies above Cholon. A large section of the city was on fire, with both sides blaming the other for starting it. Because fire trucks could not get through the front lines, at least a hundred people died in the blaze and many more were injured or rendered homeless. In front of his teamâs âpool houseâ on Rue Taberd, Lansdale found â burned-out and shell-shattered vehicles,â which gave âthe street outside a junkyard look.â Even the hard-bitten Lou Conein had been shaken when he saw a mortar shell fall right on a Renault taxicab, killing a family inside, including three children.

Given that the âpool houseâ was packed with explosives due to be shipped to agents in the North, a hit from a mortar shell would have been a catastrophe, setting off secondary explosions that would have killed everyone inside. The possibility of the house being taken in a Binh Xuyen ground assault could not be dismissed either. Some of the team members asked for permission to abandon the building. Lansdale refused. He thought the house was defensible, with walls thick enough to withstand an 81-mm mortar round. Inside, Lansdale noted approvingly, âall files were fixed for instant destruction, automatic weapons and hand grenades distributed to all personnel.â

Once Lansdale had determined that all his men were sa fe, or at least as safe as they could be under the circumstances, he returned to his own house and sat down at a typewriter to produce the report for the NSC meeting that John Foster Dulles had requested. Rufus Phillips marveled at how Lansdale was able to bang out a single-spaced, 20-page cable in a single sitting âwithout pause and without changing a single word.â (Another team member noted that Lansdale was âone of the best typists in Saigon.â) Lansdaleâs cable gave a firsthand account of what he had seen, namely, that the army was winning, and concluded with a warning that âno nationalist aspirant for power in Vietnam had as much to offer as Diem and no pro-French leader could succeed against the Viet Minh.â This report reached Washington at 7:44 a.m. on Wednesday, just in time for the NSC meeting. It was nighttime in Saigon, and Lansdale was so exhausted that he went to bed, not knowing whether he had saved Ngo Dinh Diem or not.

At the NSC meeting in the Cab inet Room, Lightning Joe Collins reiterated his conviction that âDiemâs number was up.â For the first time, however, President Eisenhower was beginning to question the judgment of his âpersonal representative.â He âcommented that it was an absolute sine qua non of success that the Vietnamese National Army destroy the power of the Binh Xuyen.â When the meeting broke up, the participants had tacitly moved away from Collinsâs plan to get rid of Diem. Lansdale had succeeding in buying Diem yet another reprieve. Now much would turn on how the fighting went. As John Foster Dulles told his fellow NSC members, âThe developments of last night could either lead to Diemâs utter overthrow, or his emergence from the disorder as a major hero. Accordingly we are pausing to await the results.â

The next morning, Thursday, April 29, Lansdale got an angry reception from French officers at TRIM headquarters. One of them was holding a Vietnamese girl who had suffered a shrapn el wound. âLook what Lansdale has done,â he declared dramatically. âHe makes war on children!â Unfazed, Lansdale handed the girl to another American officer and left for MAAG headquarters with Rufus Phillips and Colonel Le Van Kim. They were in town to request additional support for the pacification campaign in central Vietnam, Operation Breaking Chains, which had started a week earlier. Thus Lansdale had to simultaneously manage both pacification in the countryside and an urban battle in Saigonâ"challenges that dwarfed anything he had experienced in the Philippines. He wrote to Pat Kelly, âWhile it has been an extremely trying time, Iâve got about a thousand tigers by the tail and Iâm afraid to let go of any single one of them right now or there will be a big snarling mass of tigers gobbling me upâ"which I understand a number of people would enjoy but am still doubtful that I would.â

The carnage of conflict was apparent everywhere. The road through Cholon, R ufus Phillips noted, âwas littered with burned out buildings and cars,â as well as a few corpses. Just as they were sitting down with Iron Mike OâDaniel in his office, a battle broke out around the MAAG building. The officers had trouble making themselves heard âover the din of machine gun fire and exploding grenades.â When Lansdale excused himself for a bathroom break, he could see through a window above the urinal Binh Xuyen troops on a nearby rooftop firing at army forces. By the time they walked out of their conference with OâDaniel, however, the Binh Xuyen were gone, their green berets strewn on the sidewalk. This was another sign that low morale was more of a problem for the gangsters than for their government adversaries.

The situation was fraught with peril. Back home on Rue Duy Tan, Lansdale got an unexpected visitor: his old acquaintance Jean Leroy, the half-French, half-Vietnamese Catholic warlord who was now allied with the Binh Xuyen. He arrived with a heavily armed squad of troops to escort Lansdale to âmeetâ the Binh Xuyen leader, Bay Vien. As the Binh Xuyen were broadcasting grisly threats to disembowel him, Lansdale declined the invitation. Lansdaleâs Filipino bodyguard, Proc Mojica, was asleep after having stayed up on guard duty the entire night, so Lansdaleâs hand was edging toward a hand grenade he had hidden nearby. The situation was saved only by the unexpected arrival of Charles âBoâ Bohannan and another Saigon Military Mission officer. Bohannan, visiting from Manila, teased Lansdale about all the troops lounging in front of the house, saying he didnât really need that many bodyguards. Ed introduced Jean Leroy and told Bo that he was just leaving. Seeing that they could not take Lansdale without a fight, Leroy and his gunmen roared off. âYou couldnât have picked a better time to come,â a grateful Ed told Bo.

No venue was immune to the disfiguring toll of war. Late that afternoon, Diem summoned Lansdale to the Norodom Palace. He found âshell holes and martial litter in the gardens, walks, and driveways and great gouges cut in the palace walls. Windows were shuttered, sandbagged defense positions could be seen throughout the palace grounds, and heavily armed troops were very much in evidence.â Diem was showing the strain of the crisis as much as his residence was. He had gone without sleep the night before, and now his body slumped, there were âstrain linesâ around his eyes and mouth, and his speech was slower than normal. The prime minister was cheered by the progress his troops were making against the Binh Xuyen, but he was upset about a telegram he had just received from Bao Dai. After accusing Diem of plunging the Vietnamese people into âthe horrors of a fratricidal conflict,â Bao Dai demanded that Diem leave for France immediately and turn over the government to General Nguyen Van Vy, the pro-French army commander.

Diem asked Lansdale what he should do, although in truth there was not much doubt that he was going to ignore this appeal from a man that most patriotic Vietnamese viewed as a French puppet; his brother Ngo Dinh Nhu had already said as much to his own CIA contact, Paul Harwood. Diem was more interested in hearing from Lansdale what stance the U.S. government would take. A professional diplomat would have cabled back to Washington for instructions. But like Wild Bill Donovan and other OSS veterans, Lansdale did not believe in awaiting orders from headquarters. He told Diem that Washington would âaccept a legal actionâ to remove him as prime minister, but the telegram from Bao Dai was not a âlegal proceeding.â Then Lansdale told Diem to do as his conscience dictated, knowing that there was no way Diem was going to leave the country.

Diem had won a resounding victoryâ"not only in the noisome and cacophonous streets of Saigon but also in the hushed corridors of power in Washington. On May 1, 1955, John Foster Dulles sent a telegram to the U.S. embassy in Saigon saying that it was impossible to stop supporting Diem at a time when, ârightly or wrongly,â he was âbecoming [a] symbol of Vietnamese nationalism struggling against French colonialism and corrupt backward elements.â The U.S. government would continue âsupporting Diem Government to maintain its authority and to restore law and order.â

By the time Lightning Joe Collins arrived back in Saigon the next day, he was confronted, much to his frustration, with a fait accompli. The ambassador was left to reflect that when âword of Diemâs bold action and the armyâs initial success reached Washington, whatever influence I might have had ... was quickly dissipated.â Collins was summarily informed that he would be replaced by a new ambassador, the career diplomat G. Frederick Reinhardt, who arrived in Saigon on May 10. He would take a more conciliatory stance toward Diem, as advocated by Lansdale.

Collins had defeated Japanese and German armies, but in South Vietnam he had been bested by a former advertising man with a colonelâs wings on his collar. Privately smarting at what he viewed as Lansdaleâs insubordination (he later griped that it was a âbig mistakeâ to have âtwo people supposedly representing the United States governmentâ in Saigon), Collins planted his tongue firmly in his cheek when he thanked Lansdale in a farewell letter for his âsplendid help during the past six months.â Also leaving was Emmett McCarthy, the chief of the regular CIA station in Saigon who was constantly at odds with Lansdale.

Amid all these departures, the French, Lansdale noted, âwere asking me pointedly when in hell I was leaving.â He jested that he âwas being traded for two French generals and a second baseman,â but the joke fell flat, and not only because the Europeans were unfamiliar with Americaâs national pastime; âthese local French are now so sour on life that they just glared at me.â While the French sulked, Lansdale and his team exulted. For one b right, shining moment in the glorious spring of 1955, Ngo Dinh Diem and Edward G. Lansdaleâ"the premier and his premier supporterâ"reigned supreme in Saigon.

Lansdaleâs pro-Diem cables would not prove as important as George F. Kennanâs Long Telegram, sent from Moscow in 1946, which laid out the policy of containment. But they surely rank among the more influential diplomatic dispatches of the postwar period. And just as Kennanâs telegram was influential because it gave expression to an already existing disposition to oppose Soviet expansionism, so too Lansdaleâs cables were influential because they also crystallized an already existing policy, albeit one that was in momentary danger of being abandonedâ"a policy of backing Diem as an anti-Communist bulwark in Southeast Asia. It became known as âsink or swim with Ngo Dinh Diem,â and it s author was the buoyant chief of the Saigon Military Mission. William Conrad Gibbons, a leading historian of the American war effort, was later to say, âIf it hadnât been for Lansdale, Diem would have been out in April of 1955. . . . He was the mastermind of the whole thing.â

Eight years later, a different set of policymakers in Washington would decide to topple Diem, with calamitous consequences. That mistake was narrowly avoided in the spring of 1955 largely because of Lansdaleâs intervention. Some might argue, given the problems subsequently encountered by Diem, that it might have been better to remove him early on, but the coup plotters in 1955 were as unlikely as the ones in 1963 to form a government that could have been successful in mobilizing popular support. Indeed, the 1955 plotters would have been even harder put to assert any legitimacy because of their French colonial connections. By saving Diem from his enemies in Saigon and Washington, Lansdale had made a powerful and on balance positive impact on the course of Vietnamese history. Although he did not know it at the time, he had reached the apogee of his power and influence.